Smoke-reducer



L. PAUL.

SMOKE REDUCER APPLZCATION FILED JAN.18. I917- RENEWED NOV.- 13, I919- 3 SHEETS-SHEET 1- "U 3M 5 '5 Louis Paul L. PAUL.

SMOKE REDUCER.

APPLICATION FILED JAN 18, I917- RENEWED N0)! 13,1919.

Patented June 8, 1920.

3 SHEETS-SHEET 2- IA 3-#--.,, v

@uvwwboz L001 Paul.

L. PAUL.

SMOKE REDUCER.

APPLECATIGN FILED JAN. 1-8. 1917. RENEWED. NOV. 13,1919.

1,342,867. Patented June 8, 1920.

3 SHEETSSHEET 3.

LOUIS PAUL, or sroxnnn'wnsnmeron,

ASSIGNOR 0F ONE-HALF T0 JOHN SA'IR'E,

01E SPOKANE, WASHINGTON.

SMOKE-REDUCER.

Specification of Letters Patent.

Patented June 8, 1920.

Application filed January 18, 1917, Serial No. 143,175. Renewed November"13, 1919 Serial No. 337,888.

To all whom it may concern:-

Be itknown that I, LoUIs PAUL, a citizen of the United States, residing at Spokane,

in the county of Spokane and State of Washington, have invented certain new and useful Improvements in Smoke-Reducers, of

which the following is a specification.

My invention relates to devices for reducing the volume of smoke issuing from chimneys, and has for its object the provision of simple means by the use of Which the passage of smoke from the stove or furnace will be retarded and the unconsumed particles of carbon or other solid matter arrested so that the flow of the same through the chimneyor smoke stack will be prevented. A secondary object of the invention is to provide means whereby anysparks which may escape from the stove or furnace will be extinguished and damage from this source thereby avoided.

The invention is illustrated in the accompanying drawings and consists in certain novel features which will befirst fully described and then particularly pointed out in the appended claim.'

In the drawings:

' Figure l is a perspective View of a device embodying my invention and intended more particularly for use in connection with an ordinary stove pipe;

Fig. 2 is a longitudinal section of the same Fig. 3 is a horizontal sectionon the line 33 of Fig. 2;

Fig, 4 is an elevation of a form of the device intended more especially for use in connection with the smoke stacks of furnaces;

Fig. 5 is a transverse section of the same;

Fig. 6 is a longitudinal section thereof In the accompanying drawings, a portion .of an ordinary stove is indicated at 1, the

stove forming no part of my present inven- This casing will preferably be constructed of sheet metal, as such material is light, inexpensive and free of perforations or minute openings through which the smoke might escape. The top and bottom walls of the casing are, of course, constructed with openings, as indicated at 6, to correspond to the annular rims or flanges and establish communication between the smoke pipe and the interior of the casing. Disposed transversely in the casing, immediately above the opening in the bottom wall of the same, is a deflector 7 V-shaped in cross section whereby it presents wings or branches which will turn aside the upflowing' smoke and direct it toward the ends of the casing. Above the deflector 7 cleats or other supports 8 are 'providedon the side walls of the casing and upon the said cleats is slidably supported a drawer 9 having its bottom 10 formed of wire netting or other foraminous material. At the center of thisdrawer is a vertically disposed flue 11 having open upper and lower ends and having a damper 12 mounted therein, the rod 13, by which said damper may be adjusted, extending through the front end of the drawer so that it may be manipulated from the outside of the casing. The drawer is provided on its front end with a handle .14 whereby it may be withdrawn from the casing when necessary for repairing or cleaning, and the sides-of the drawer will preferably be constructed of sheet metal, as shown at 15, so that they will effectually retain in place the gravel or crushed stone 16 placed withinthe drawer to serve as a filtering medium for the smoke. The casing, is also provided on its front side, above the drawer, with a check damper and inspection door 17 which is preferably of the perforated rotary plate type.

It is thought the use and advantages of the device will be readily understood from the foregoing description, taken in connection with the accompanying drawings.

lVhen a fire is started in the stove,-the damvided. After the fire is burning properly,

the drawer may be pushed in or the damper 12 may be turned so as to extend across the flue 11 and thereby obstruct the bore ofthe same so that any smoke or other vapors flowwhile upon the outer side of its end ing through the stove pipe will be forced to pass through the drawer around and at the sides of the flue so that it will be caused to percolate through the body of the gravel or similar material and, consequently, its escape will be retarded and the flow of the solid particles of carbon or other material will be arrested and said particles held. by the granular bed. It is to be understood that the walls of the drawer fit closely against the walls of the casing, as shown in Fig. 3, and the heat fromthe smoke and other products of combustion will be held in the casing and serve to raise the temperature of the walls of the same so that the heating of the room or building in which the stove may be located will be effectually accomplished at the cost of a minimum supply of fuel. If the draft through the pipe be excessive, the check damper 17 may be opened and the draft, consequently, reduced in the well-known manner.

In Figs. 4, 5 and 6, I have shown a somewhat different form of the invention, especially adapted for use in connection with the smoke stacks of boiler furnaces. In this form of the invention, a portion of a smoke stack is indicated at 20 and a boiler furnace is indicated at 21, a flue 22 extending between the furnace and the smoke stack to carry off the smoke and other products of combustion. A casing 23 is inserted in the flue 22 and this casing may be of any desired form but is preferably constructed of sheet metal and provided with openings 24 in its ends walls, around the said openings, are rims or flanges 25 adaptedto fit snugly within the sections of the flue 22 to thereby couple the casing to the flue. Within this case and spaced from the ends of the same, is a basket or drawer consisting of reticulated sides 26 adapted to rest upon the bottom of the casing at their lower ends and at their upper ends to ex tend up into a dome or vertical extension 27. I have shown these sides 26 as connected by a plate 28 but this plate 28 is not indispensable. A flue 29 having open ends is fitted between the reticulated sides 26 and will preferably be arranged in axial alinement with the sections of the flue 22. A damper 30 is disposedwithin this flue and issecured upon a damper rod 31 extending to and through the side of the casing so that it may be manipulated from the exterior of the same. Gravel or crushed stone, indicated at 32, is placed around the flue 29 so as to fill the cage, consisting of the bottom 28 and the sides 26 and upon the upper end of the dome or extension 27 is fitted a cap 33, as shown. A tank 34.- is provided above this dome and a pipe 35 leads from said tank into the upper end of the dome where it is coupled to and carries a spraying pipe 36 disposed just above the body of stone or other granular material and having perforations in its under side whereby water flowing into the pipe will be discharged upon the said bed of material. A cut-off valve 37 of ordinary construction is mounted within the pipe 35 and the valve rod 38 may extend to any convenient point so that the flow of water may be readily controlled. A door 39 is provided at that side of the casing through which the damper rod 31 projects.

It will be readily noted that the device shown in Figs. 4, 5 and 6 and just described, operates in substantially the same manner as the first described form of the invention. The addition of the water spray will provide for the extinguishment of all sparks flowing through the smoke flue and, consequently, said sparks will be harmless when they escape from the smoke stack, if they do escape. By opening the door 39 an'outlet for the water will be provided and by turning on the full force of the water, the apparatus may be conveniently cleaned. v

My improved device is exceedingly simple in the construction and arrangement of its parts and may be applied to any stove, furnace, or boiler now in common use at a slight expense. When installed-it will effectually hold back thesmoke and other vapors which contain heat and are now ordinarily permitted to pass into the atmosphere in ob- .noxious form. The heat in these vapors will be effectually utilized instead of being lost as is now generally the case.

Having thus described the invention, what is claimed as new is:

A device for the purpose set forth com prising a casing having an inlet and an outlet, a reticulated holder disposed across the casing between and in spaced relation to the inlet and the outlet, and bodily insertible in and removable from the casing, a flue within said holder having open ends located within the walls of the holder .and arranged to register with the inlet and outlet, and a body of granular material within the holder around the flue.

In testimony whereof I affix my signature.

LOUIS PAUL. 1. s] 

